Trolley-pole support



(N0 Model.)

N. 11. DA1/1s. TROLLEY ROLE SUPPORT.

No. 557,114. i Patented 111114.31, 1896.

/N YENTO" UNITED, STATES PATENT OFFICE.

NATHAN H. DAVIS, OF PHILADELPHIA, PENNSYLVANIA.

TROLLEY-POLE SUPPORT.

SPECIFICATION forming part of Letters Patent No. 557,1 14, dated March 31, 1896. Appnootioo noa Novomoor 8,1895. sooioi No. 568,355. oro moda.)

To all whom it may concern:

Beit known that I, NATHAN H. DAvIs, a citizen of the United States, residing in the city band county of Philadelphia, State of Pennsylvania, have invented a certain new and useful Improvement in Trolley-Pole Supports, of which the following specification is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to the mechanism by which the trolley-pole of electrically-actuated cars are supported, and has for its objectto provide a pivoted spring-support at once simple, cheap, and thoroughly effective.

The nature of my improvements will be best understood as described in connection with the drawings, in which they are illustrated, andgin which Figure l is a plan view of my improved device; Fig. 2, an elevation on the line :c x of Fig. l; Fig. 3, an elevation on the sectionline y y of Fig. 1; Fig. 4, an end view, and Fig. 5 a perspective view of a partof my imp roved mechanism.

A is a base-plate, which is secured to the roof of the car or other convenient position in the usual way, and preferably I provide it with a perforated elevation A', whereby the wire serving to conduct the current to the motor may be secured to and placed in electrical connection with the base-plate.

B is a plate, which is provided with a circular outwardly-extending flange B', grooved by preference on top and bottom, as indicated, said plate being rigidly secured to the base-plate A by a bolt C or any other convenient fastening device.

D is a bracket provided with a circular depending flange D', adapted to fit over and around the ange B' of the plate B.

E is an annular ring extending around the lower part of the plate B and lying beneath the flange B', the said annular ring E being in use bolted securely to the end of the depending iiange B'.

G and G' are balls forming ball-bearings between the top of the flange B' and the under part of the bracket D and between the bottom of the iiange B' and the top of the annular ring E.

The bracket D is formed with upwardlyextending lugs D2 D2, which serve to support a transverse shaft I, and by preference between the center of the bracket D and the upwardly-extending lugs D2, I form a bracket in the downward curves, as indicated at D3 D2, and lying in the bend of the said curves I form shoulders D4, which are provided with threaded perforations, into which fit adjusting setscrews I-I. (Best shown in Fig. 4.) Obviously the set-screws are not essential and may be dispensed with.

L is what I may call a stirrup, formed with downwardly-extending lugs L', which are journaled on the ends of the shaft I and by preference with outwardly-curved intermediate sections L3 between the central part ofthe stirrup and the lugs L', said curved portions corresponding with the curves D3 of the bracket B and being provided with shoulders L4, which by preference are also made with threadedperforations, into which fit setscrews H. The stirrup L carries the socket L5, in which the trolley-pole is seated and secured.

J is a coil-spring which surrounds the shaft I between the lugs D2 D2.

K K are spring-sockets,which are journaled on the shaft I and on their inner sides formed to more or less conform to the shape of the ends of the coiled spring, shoulders K2 being formed against which the ends of the coiled spring fit. The sockets are also provided with outwardly-extending lugs K3 and K4, one of which rests against the shoulder D4 or against the end of the set-screw H fitting in said shoulder, while the other rests against the shoulder L4 or against the end of the adj Listing-screw H' fitting in the last-mentioned shoulder.

It will be observed that the shoulders L4 L4 face in dierent directions, as do also the shoulders D4 D4, and it will also be observed that the shoulder L4 at each end of the stirrup faces in the opposite direction to the shoulder D4 in the corresponding end of the bracket, and it will readily be seen that by reason of the construction and arrangement shown and described each movement of the st irrup L to one side or the other is opposed by the power of the spring .I ,resisting the tendency to uncoil it, and I have found that a greatly-improved action is secured by taking means to keep the spring normally under ten- IOO sion, and this I accomplish by the use of the adj Listing-screws H and H', by means of which any desired tension can be put upon the spring in its normal position.

lVhile I prefer to use balls G G', as shown, the joint formed by the flange D' with the bracket D and annular ring E is, by reason of its strength and compactness, a particularly good one, even without balls, and the bracket D may rest directly upon the flange B'.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A trolley-pole support having in combination a pivoted bracket D, having lugs D2 D2 and shoulders D4 D4, a shaft I supported on the lugs D2, a coiled spring J surrounding shaft l, spring-sockets K K j ournaled on shaft I and having means whereby they are secured to the spring ends so as to put the spring under tension when one socket is moved without the other, said sockets having also lugs K3 K4 and a pole-supporting stirrup L having lugs L' L pivoted on shaft I and shoulders L4 L4, said shoulders D4 and L4 being arranged to engage the lugs on the spring-sockets as described.

2. A trolley-pole support having in combination a pivoted bracket D, having lugs D2 D2 and shoulders D4 D4, a shaft I supported on the lugs D2, a coiled spring J surrounding shaft I, spring-sockets K K j ournaled on shaft I and having shoulders K2 adapted to abut against the ends of the spring and lugs K8 K4, a pole-supporting stirrup L having lugs L' L' pivoted on shaft I and shoulders L4 L4, said shoulders D4 and L4 being arranged to engage the lugs Ks and K4 respectively and so that a movement of stirrup L in either -direction will tend to uncoil the spring J.

3. A trolleypole support having in combination a pivoted bracket D, having lugs D2 D'2 and shoulders D1 D4, a shaft I supported on the lugs D2, a coiled spring J surrounding shaft I, spring-sockets K K journaled on shaft I and having shoulders K2 adapted to abut against the ends of the spring and lugs K3 K4, a pole-supporting stirrup L having lugs L' L' pivoted on shaft I and shoulders L4 L4, and adj usting-screws as I-I whereby the tension of the spring can be regulated.

4. A trolley-pole support having in combination a pivoted bracket D, having lugs D2 D2 and shoulders D4 D4, a shaft I supported on the lugs D2, a coiled spring .I surrounding shaft I and having shoulders K2 adapted to abut against the ends of the spring and lugs K3 K4, a pole-supportin g stirrup L having lugs L' L' pivoted on shaft I and shoulders L4 L", and adjusting-screws as II and Il' whereby the tension of the spring can be regulated.

5. A trolley-pole support having in coinbination a base-plate A adapted to be secured to a car, a plate B having an annularl flange i B', a bracket D adapted to fit over the flange i B' having a cylindrical flange D' adapted to fit over the plate B, an annular plate E adapted to fit under the flange B' and to be secured to the flange D', and mechanism for supporting the trolley-pole secured on bracket D.

G. A trolley-pole support having in conibination a base-plate A adapted to be secured to a car, a plate B having an annular flange B', a bracket D adapted to fit over the flange B' having a cylindrical flange D' adapted to fit over the plate B, an annular plate E adapted to fit under the flange B' and to be secured to the flange D', balls G and G' fitted between the flange B' the bracket D and the plate E, and mechanism for supporting the trolley pole secured on bracket D.

NATHAN Il. DAVIS.

lVitnesses: v CHARLES F. Znsetnn, D. STEWARTE. 

